Laser Markers

Laser Markers

Selecting a laser marking system begins by determining the laser wavelength that will be most effective on the material that requires marking. Laser marking systems are only one category within the larger realm of marking machinery that creates designs, images, logos, codes, titles and other kinds of marking on a wide variety of surfaces and substances. Laser marking machines use a computer to control the laser beam that performs the work. This technology allows for very complex images to be precisely positioned and executed. Certain lasers are used with specific materials because the wavelength of the laser has different results on different materials. Laser markers are used to mark or engrave metals, plastics, rubber, glass, marble, granite, foam, composites and other hard surfaces. The ability to mark an item has many advantages making marking devices invaluable for many companies. Laser markers often print bar codes, universal product codes (UPCs), serial numbers and many other markings require precision and consistency.

Laser markers vary in size from compact rectangular enclosures to advanced systems requiring particle filters, an air cooler and a fiber optic cable. An enclosure shield protects the operator and the surround environment.  The workpiece is placed on the marking stand and, when prompted by the operator or automatically triggered by a computer, a laser beam begins marking the workpiece. Laser marking may use either a scribe or stencil system to create designs. In a scribing system, a thin beam from a low-power laser slowly moves on the surface of the workpiece. It traces the shape of the desired image until the computer program senses it has completed the task. Stencil markers use high-power lasers. In this technique, a wide laser beam is projected through a pre-cut stencil to quickly mark the image onto the material. Though they are fast, stencil makers are most expensive to purchase, operate and maintain and use more power. Laser markers are only one option when it comes to marking machinery. Engraving machines use a three dimensional image to cut grooves into hard surfaces like metal whereas etching machines work with more ductile materials such as leather or plastic. For small runs, steel stamps are used to mark products by hitting or pressing a marked stamp into material similar to engraving or etching. This includes hand stamps and press stamps, which are components in a stamping machine.